This usually means one of the parts is corrupted; you may need to re-download that specific part.
Once the process is complete, you will have a new folder or file that contains the full contents of the archive. You can then delete the original .rar parts to save space. Common Issues ten_dates.part1.rar
Do you have downloaded, or are you missing a specific number in the sequence? What is multipart archive - GitHub Gist This usually means one of the parts is